Dr. Ratio is a 5-star Hunt-type character in Honkai: Star Rail known for his exceptional single-target damage output and powerful follow-up attacks. He is a member of the Intelligentsia Guild, an organization dedicated to the pursuit of knowledge and intellectual excellence. As a scholar and researcher, Dr. Ratio is characterized by his unwavering commitment to logic and reason. He possesses an arrogant demeanor, often looking down on those he perceives as intellectually inferior. His combat abilities make him particularly effective against bosses and single enemies. Dr. Ratio's character design reflects his intellectual nature, and his interactions with other characters often revolve around philosophical debates and demonstrations of his superior intellect.